Auxiliary scraper and loading apron for carry-type excavating scoops



May 25, 1954 RQBB 2,679,119

AUXILIARY SCRAPER AND LOADING APRON FOR CARRY-TYPE EXCAVATING SCOOPSOriginal Filed May 18, 1943 3 Sheets-Sheet l l l l l l 1 *1 LEI H l l i-&

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May 25, 1954 AUXILIARY SCRAPER AND LOADI FOR CARRY- Original Filed May18, 1945 3 Sheets-Sheet 2 I jwuclrvfot I F5 77 052 May 25, 19542,679,119

F. 5, R083 AUXILIARY SCRAPER AND LOADING APRON FOR CARRY-TYPE EXCAVATINGSCOOPS Original Filed May 18, 1943 3 Sheefss-Sheet 5 7 Thai 7grvucxvvbof the relation of the various instrumentalities in" corporatedtherein.

Figure 3 is a rear view showing in somewhat more detail the mounting ofthe machine, and certain hydraulic or other suitable jack means foroperating the various parts thereof.

Figure 4 is a fragmentary View of the upper forward end of one of theframe members or the machine, illustrating the portion of a closuresupporting arm and stop means provided there- Figure 5 is a fragmentarysectional view taken about on the line 5-5 of Figure 4.

It should be understood that in the description of the machine whichhere follows, and in the claims appended, the word scraper is used todenote a member or members capable of effecting the dual functions ofexcavating and leveling.

Referring now particularly to Figure 1, it will be noted that themachine is mounted on rear wheels i, and front wheels 2, the rear wheelsbeing preferably driven from a motor 32 mounted thereabove, by means ofsuitable transmission gearing 4, not further illustrated, but well knownin the art, to rear wheels I to be more particularly describedhereinafter.

The motor 3 is mounted on a suitable rear plate or deck member 6,extending transversely of the machine and adapted to have suitablyfastened at its outer ends the side members 1, the same constituting theframe members of the machine. As will be noted, these frame members aresubstantially triangular in shape.

At the lowermost portion 8 of the substantially triangular side framemembers "I, a scraper memher 9 is provided likewise extendingtransversely of the machine, and connected to the side members in anysuitable manner. Scraper member 5 is a main or body scraper operable asthe machine advances.

Just to the rear of the scarper 9, the body member ID is hinged at H soas to be raised or lowered, as desired, for dumping the contents of thebody or returning the body to its dirt receiving position. The raisingand lowering of the body I is effected by means of suitable jacks l2,pivotally engaged at |3 with the upper rear portion of the body memberl0 and similarly pivotally engaged at M with the rear deck member 6.

Passing now to the means for supporting the front wheels 2 of themachine, it will be noted that adjacent the outer sides of the machine,and. above the wheels, suitable jacks l are provided adapted to have thepiston rods I6 thereof connected in any suitable manner to the axles iiof the wheels. The jacks I5 are pivotally engaged at I8 with the upperouter sides of the frame members and in order to maintain the desiredposition of the wheels upon adjustment of the pistons in the jacks l5,suitable links H! are provided and pivotally engaged at with the housingof the axle I1, and similarly engaged at 2| with the frame members 1.

It will be seen, therefore, that upon actuation of the pistons in thejacks |5 by hydraulic or other suitable means, a raising and lowering ofthe frame members i, and thus the body I0, is accomplished. It issignificant, in view of the provision of separate jacks l5 for the frontwheels 2, that the front wheels may be individually controlled as totheir relationship with the body l0 to properly maintain the scraper 9in any desired adjusted position.

In order to provide the necessary fluid or air, as the case may be, theengine 3 is equipped with a power take-oil 22, as seen in Figure 2,adapted to drive a suitable pump 23 to pressurize a tank 24 adapted todeliver the necessary pressure fluid to the jacks l2 and I5. For thecontrol of this pressure fluid, a suitable control panel 25 is provided, having a series of control levers 26 thereon, adapted to beactuated by the operator of the machine from the seat 2! provided on therear deck 6.

As will be seen upon further consideration of Figure 2, the operator isprovided with the necessary steering wheel 28 whereby the rear wheels Iof the machine may be actuated through conventional steering controls29, in accordance with well known automotive practice.

At this point reference is made to Figure 3 to more particularlydisclose the manner of mounting the rear axle 5. The said rear axle 5 iscarried in a housing 39 provided at its end with additional housings 3|adapted to enclose well known universal joint steering knucklemechanism, and at its central portion with a known type of differentialenclosed in a housing 32. Adjacent the top of the housing 32, anextension 33 is provided, adapted to be pivotally connected at 34 with amember 35 attached to the rear deck 5, whereby transverse pivotalmovement of the wheels I may take place.

It should be noted, as shown in Figure 1, that the drive from thetransmission gearing 4 is accomplished by means of conventional driveshaft 36 in a housing 31, suitably pivotally engaged with the housing32, whereby the drive may be effected from the engine under the controlof the shift lever 38, as shown in Figures 2 and 3.

The drive from the engine 3 to the rear axle 5 is not further herereferred to by reason of its being known by those skilled in the art,and since it is of conventional construction.

Referring again to Figure 1, and likewise to Figure 4, the front closureand auxiliary scraper 39 is shown as being substantially arc-shaped incross section, extending transversely of the machine, and being providedat its lower edge with a suitable scraper 40. The closure 39 isconnected at its upper end with the arms 4|, the said arms extendingrearwardly into the body portion of the machine, and being provided atthe rear ends with roller elements 42, pivotally engaged at 43 with thearms 4|. These roller elements are adapted to move in rail sections 44formed in the side frame members the said rail sections being providedwith overhanging lips 45, whereby to confine the rollers 42 within therails 44. In order to strengthen the connection of the front member 39with the arms 4 l, suitable side members 46 are provided, the said sidemembers likewise facilitating the operation of loading the machine, aswill be hereinafter pointed out.

In order to operate the front scraper unit, suitable jack members 41 areprovided, the pistons of the said jack members being pivotally engagedat 48 with the outer ends of the arms 4|. At the inner ends of the saidjack members 41 suitable pivotal engagement at 49 is provided on theframe members 1. The arms 4| of the front unit are provided with cammembers 50, adapted to coact with stop or abutment members 5|. The saidstop members 5| are in the form of links pivoted at 52 and are providedat 53 with removable bolts, or the like, adapted to be adjusted in oneor other of the holes 54 in the frame members 1, for coaction with thecams 50 upon inward movement of the scraper unit trimmer the'actiomof'the j'acksffl? during-the operation ofthe scrap'er llff Abutmentmembers" provided-' at the-' corners or" apices of the substantiallytriangularmembers T, whereby'tocoa'et'with the" tro'l panelzeipreviously mentioned.

It may; under I able that the '-fr'ontclosure and" scraper it unit 40,be further: provided with digging teeth not illustrated; to"faci-litatethe diggirigactibrioftlfe scraper 40.;

In order to further explain-the invention, ,thee operation of, thevarious instrumentalities.:.-heretofore referred to will be describedrintheir normal sequenceof operation, it b'eing borne-in mindthatzthescrapers 9 and tdprovided-on thez iramemembersIL-and the closure39, respectively, are adapted ,to. perform the same. functionsin ac-.:cordance with the definitionof:the--word,;scrape erff previously setforth. W

In; operation, the operatonatsthe rear ofithe machine having lowered thefront end; ofetha frame 'l -intoithe position shown in full lines inFigure 1 and caused the machine to movesto the right insaidfigure, hasaccumulated by the action or the scraper 9 a certain amount of dirtillustrated in dotted lines, and denoted A in said figure. Having movedthe machine forward to the full extent of the traction available at therear wheels I, and the said machine no longer being capable of beingmoved by said traction, fluid pressure having been previously introducedat the lower ends of the jacks 4'! so that the member 393 has assumedthe upper position shown in dotted lines in said figure, he thereuponactuates one of the control levers whereby to introduce fluid pressureinto the upper ends of the jacks 41 and cause a downcertain conditions;be desir g? in addition to==being provided*with -the scrapen wardpicking action of the member 39. This I compels the scraper 4G to engageor enter the ground, and, upon continued introduction of fluid pressureinto the upper ends or" the jacks 41, an inward movement of the saidscraper ill will be effected, the limit of downward movement of the saidscraper being determined in accordance with the position of the bolts53, and the links 5! of the stops shown in Figure 4.

Having engaged the scraper All with the ground, continued inwardmovement of the pistons of the jacks 4': will cause the members 39 andit to move towards the open end of the body, and the scraper 4a toperformits scraping function, thereby scraping dirt or material andforcing it rearwardly into the body It. If, at this point, enoughmaterial has been introduced into the body It to warrant the carryingoff of that dirt or material to the fill or place of deposit, this maybe done, but if such is not the case, the fluid pressure may be againintroduced into the lower ends of the jacks 41, and the unit 39-40caused to move outwardly into the upper position shown in dotted linesin Figure l, and again operated to effect a picking action, if desired,and the inward scraping movement of the scraper 40 again effected.

However, it will be apparent that the material which heretofore resistedthe forward movement of the scraper 9, has been removed into ingoperation;

the"b'ody id, andi therefore; the"machine might again-- be" operated"under its-"- tracti've powe through the wheels "I iu'rmove forwardlyari'd cause the scraper-'9 "to' carry outf'a further scrap In otherwords, the front and rear scrapers may be worked alternately, if-dsired.

It will be apparent that incarrying i out the foregoing operations ofthe-machihe1 the body-*- is orthe machine wilhbe loaded with apayloadg,and, thereupon, t'eoperator introduces" fluid pressure inte -the upperends of the jaclrs i ii thereby causingthe pistons therein to vg:downwardly: and'thus raise-the scraper S out of engagement with theearth or groundj the front unit 39-43 having previously been broughtinto' positidn to' retain-the--dirt' ortli'e materials dug up by the"scrapers "9 and- M3 by assuming a*- positi'on adjacent to 1 the scraper"9 and closing"- closing position in front of the body lih 'arid byactuation'pfthe jacks--12, the body lib-may be 'causedto 'pivot around-the-=pi-vot i I" to dumpthe dirt or other materials out 'of 'th'ebody;

Ih' accordance wltlrw'ell known pra'ct e? the dumpingoperationmay-beaccriiplis'hed t one spot, orspreading oftiiemat r ismay befaci'l'i' tated" by "suitable 'adjustrrfen -of the sc-raper" 9*withrespee't ta the Y d'epth of- 'materi'als desi-r'ed' to be spread orleveled.

It will likewise be apparent that the scraper 46 may be availed of toeffect this leveling operation by rearward movement of the machine underthe action of reversing the transmission drive by lever 38, or, in otherwords, movement of the machine to the left, as shown in Figure l, thefront scraper being susceptible of adjustable positioning with respectto the ground.

An alternative method of operation of the machine may be that ofoperating the machine into a position adjacent the materials to be dug,and without effecting the scraping operation by the scraper 9 rely uponthe independent scraping operation which may be efiected by the scraper40, under the controls of the jacks 41, and thus a digging or excavatingaction may be accomplished regardless of forward movement of the machineto impart a scraping action to the scraper 9.

Another advantageous action obtainable by my construction of scraperlies in the capability of engaging the scraper by downward pickingpenetration, with the earth, so that when the hydraulic units A! exertrearward pull on the members 39-40, earth may be scraped into the bodyI0. If the scraping is hard, the member 40 can act as an anchor toassist the power unit 3 to drive the scraper 9 forward, supplementingthe tractive effort of wheels 1. Otherwise, the scraper 40 may be pulledrearwards and adequately perform its independent scraping function. Nosupplemental traction machines to push or pull my scraper are required,and the self-contained power of the scraper is sufiicient to load itcompletely, and move it at high travel speed to and from the fill.

From the foregoing it will be seen that the jacks 41 form unyieldingpower devices by which to scraping action of the member 40 in the mannerpreviously described. The digging action of the member 40 and itsscraping operation may be effected without any adjustment of the frame 7upwardly or downwardly in controlling such action.

If the machine is operating on an earth surface inclining downwardlytransversely, the independent adjustments vertically of the wheels 2 maytilt the machine at an angle transversely about the axis 34 connectingframe 1 with the rear axle housing 32, enabling the scraper unit 39-40to remain parallel to the surface and dig and scrape a layer of undugearth of predetermined depth for the entire transverse cutting area ofthe member 39-40.

The jacks 41 form unyielding power devices for causing the unit 39-40 todig into the undug earth and maintain its earth penetrating position asit is pulled rearwardly to scrape earth into the bowl I0. The rollers 42constitute rolling, movable or sliding connector devices movablelongitudinally of the frame parts 7 in the guides 44, and pivotallyconnect the arms 4| to the frame.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States, is:

In a vehicle of the class described, in combination, a vehicle frameincluding spaced side members, travel supporting means mounted on theframe, means for propelling the vehicle, a body carried by said frame, afirst scraper on said frame, means for raising and lowering at least oneend of said frame whereby to raise and lower said scraper, an auxiliaryscraper, spaced arms supporting said auxiliary scraper and pivotally andslidably connected with the sides of said frame, means for moving saidauxiliary scraper into a position adjacent to the first scraper, anabutment provided on the frame to limit the upward pivotal movement ofthe auxiliary scraper, adjustable stop means provided on the frame tolimit the downward movement of the auxiliary scraper, and cam meanscarried by the arms of he auxiliary scraper adapted to engage the stopmeans when the auxiliary scraper is moved into a position adjacent thefirst scraper.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 276,303 Sweatt Apr. 24, 1883 1,300,111 Billings Apr. 8, 19191,471,302 Wright et al Oct. 16, 1923 1,891,266 Le Tourneau Dec. 20, 19322,189,222 Rapp Feb. 6, 1940 2,198,087 Moore Apr. 23, 1940 2,249,356Goodman July 15, 1941 2,252,763 French Aug. 19, 1941 2,306,066 Le BleuDec, 22, 1942 2,328,715 Drott Sept. 7, 1943 2,396,287 Robb Mar. 12, 19462,418,813

Anderson Apr. 15, 1947

